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Frequency multiplier based on composite left/right handed non-linear transmission lines

A non-linear transmission line, left and right hand composite technology, applied in waveguide-type devices, circuits, electrical components and other directions, can solve the problem of unable to suppress fundamental wave signal, limited and other problems, to simplify the frequency multiplier structure, suppress fundamental wave power, improve Effects of microwave properties

Active Publication Date: 2013-03-20
北京中科微投资管理有限责任公司
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  • Abstract
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Problems solved by technology

There are some inherent defects in the traditional right-hand nonlinear transmission line: the equivalent circuit of the right-hand transmission line is a low-pass circuit, so the highest frequency of the output harmonic is less than the cut-off frequency of the transmission line, which is limited in high-frequency applications; the low-pass circuit itself cannot suppress the input fundamental wave signal, and the amplitude of the fundamental wave signal is often much larger than the harmonic signal. In order to obtain the ideal harmonic wave, high requirements are placed on the filter in the system

Method used

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  • Frequency multiplier based on composite left/right handed non-linear transmission lines
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  • Frequency multiplier based on composite left/right handed non-linear transmission lines

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0031] PIN diode characteristics such as figure 1 As shown, when the diode is in the cut-off state, its junction capacitance is a fixed value. When the input signal amplitude is greater than the diode’s turn-on voltage, the diode turns from cut-off to conduction, and its capacitance value changes suddenly. The above-mentioned nonlinear process is the basic principle of PIN diodes to generate harmonics. Therefore, PIN diodes are also commonly used devices in frequency doubling circuits.

[0032] In recent years, methods for constructing left-handed materials by transmission lines periodically loaded with series capacitance and parallel inductance have been proposed. Different from the right-handed transmission line, E, H...

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Abstract

The invention discloses a frequency multiplier. The frequency multiplier is composed of at least a composite left / right handed non-linear transmission line unit. The composite left / right handed non-linear transmission line unit is formed by connecting a single left-handed non-linear transmission line and a single right-handed non-linear transmission line in series. In combination with the advantages of the left-handed non-linear transmission line and the right-handed non-linear transmission line, the invention can improve the working frequency and the frequency multiplying efficiency of the frequency multiplier.

Description

technical field [0001] The invention relates to the technical field of frequency multipliers, in particular to a frequency multiplier based on left and right hand composite nonlinear transmission lines. Background technique [0002] Microwave frequency multipliers are widely used in systems such as communication, radar and measuring instruments. Its main functions can be summarized in the following aspects: 1. Multiply the oscillator with low frequency but stable output frequency to obtain a high-frequency oscillation source with high stability; 2. The highest oscillation frequency of the transistor oscillator cannot reach When required by the system, the ultra-high frequency oscillation source is obtained through the frequency multiplier; 3. Multiple integer multiple frequencies are obtained. [0003] The nonlinear transmission line is a widely used frequency multiplier structure, which has the advantages of simple structure, no additional matching circuit and idle circuit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/213
Inventor 杨浩吴茹菲董军荣黄杰张海英
Owner 北京中科微投资管理有限责任公司
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